Consistency dynamic adjustment method and device in distributed data storage system

A distributed data and storage system technology, applied in the field of consistent dynamic adjustment in distributed data storage systems, can solve problems such as system delay changes

Active Publication Date: 2017-02-01
天航长鹰(江苏)科技有限公司
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Problems solved by technology

[0003] According to the PACELC theory, choosing different consistency levels will cause changes in system delay

Method used

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  • Consistency dynamic adjustment method and device in distributed data storage system
  • Consistency dynamic adjustment method and device in distributed data storage system
  • Consistency dynamic adjustment method and device in distributed data storage system

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Embodiment Construction

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] figure 1 It is a system architecture diagram of the consistency dynamic adjustment method in the distributed data storage system of the present invention. like figure 1 As shown, the method of the embodiment of the present invention is applied to a distributed data storage system, and the distributed data storage system includes: a client...

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Abstract

The invention provides a consistency dynamic adjustment method and device in a distributed data storage system. The consistency dynamic adjustment method comprises the steps that a coordinating node obtains performance parameters of the distributed data storage system; the coordinating node calculates probability of inconsistency which corresponds to each copy response waiting to be returned of a user request in the distributed data storage system and a system delay; and the coordinating node obtains at least one first response number with the probability of inconsistency and the system delay meeting a preset condition based on the probability of inconsistency corresponding to each response number and the system delay. The at least one first response number is used for dynamic adjustment of the consistency level. According to the consistency dynamic adjustment method and device in the distributed data storage system, a consistency level meeting a delay requirement and a consistency requirement of a user can be selected in real time and automatically for a current running state of the distributed data storage system.

Description

technical field [0001] The invention relates to the technical field of distributed data storage systems, in particular to a method and device for dynamically adjusting consistency in a distributed data storage system. Background technique [0002] For a distributed data storage system, the CAP theorem points out that only two of consistency, availability, and network partition tolerance can be selected at most. With the continuous exploration and practice of researchers in the field of distributed data storage systems, the following PACELC theory is proposed: (1) When the network between replica nodes is split, the distributed data storage system needs to be between strong consistency and availability Make a trade-off; (2) When there is no network segmentation, the distributed data storage system needs to make a trade-off between strong consistency and request delay. Therefore, system designers need to choose between these two tradeoffs. However, since network segmentation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08G06F17/30
CPCG06F16/27H04L67/1097
Inventor 王旭孙海龙夏正林肖邦唐宇
Owner 天航长鹰(江苏)科技有限公司
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